Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Robert Gross, DO

Internal Medicine Physician in Lake Isabella, CA · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1396827358

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Registry record

Entity type Individual (Type 1)

Name Dr. Robert Gross

Credential DO

Sex Male

Practice address Lake Isabella, CA, 93240

Phone (760) 379-8630

Enumeration date Oct 19, 2006

Last updated in NPPES Jun 30, 2008

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 20A7951 (CA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
5869361002	Other	CA	CIGNA POS
0076650242	Other	CA	PACIFICARE / SECURE HORIZONS
OHB253	Other	CA	BLUE CROSS
0033089489	Other	CA	HEALTHNET
421359	Other	CA	AETNA
5869361004	Other	CA	CIGNA HMO
020A79510	Other	CA	BLUE SHIELD

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Robert Gross's NPI record?

Cross-check NPI 1396827358 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1396827358 active?

Yes, as of the latest NPPES snapshot, NPI 1396827358 is active (record last updated 2008-06-30).

Other providers at this practice address

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Phillip Martin Internal Medicine Physician · Lake Isabella, CA NPI 1275580680 James Gutzman Physician Assistant · Lake Isabella, CA NPI 1295834844 Holly Spohn-Gross Podiatrist · Lake Isabella, CA NPI 1659453611 Sienna Medical Corporation Internal Medicine Physician · Lake Isabella, CA NPI 1174684583 Gary Finstad Internal Medicine Physician · Lake Isabella, CA NPI 1184763633 Sienna Hospitalist Group Incorporated Hospitalist Physician · Lake Isabella, CA NPI 1346499050 Miranda Everett Physician Assistant · Mountain Mesa, CA NPI 1396067393 Sienna Wellnes Walk-in Clinic Primary Care Clinic/Center · Lake Isabella, CA NPI 1336489376

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-30.